also unset LC_CTYPE, which affects character sort order too

regress/usr.bin/sort/stests

@@ -1,6 +1,6 @@
 #! /bin/sh
 #	@(#)stests	8.1 (Berkeley) 6/6/93
-#	$NetBSD: stests,v 1.14 2001/05/14 21:31:38 jdolecek Exp $
+#	$NetBSD: stests,v 1.15 2004/02/18 09:43:15 jdolecek Exp $
 
 # This code is derived from software contributed to Berkeley by
 # Peter McIlroy.
@@ -95,7 +95,7 @@ TEST=		# major sequence number of test
 trap "rm -f in in1 out xx -k fields; exit" 0 1 2 13 15
 
 # some tests would fail if non-C locale is used
-unset LANG LC_ALL
+unset LANG LC_ALL LC_CTYPE
 
 # xsort testno options
 # Sort file "in" with specified options.